Kyanite - UV-Vis spectra
Blue:
- Blue kyanite – 7.27 ct – India (1997/12)
- Dark-blue kyanite – 2.66 ct – (Nepal or Brazil)(2008/05)
- Dark-blue kyanite – 4.55 ct – (Nepal or Brazil) (2008/05)
- Blue kyanite – 21.98 ct Crystal – Brazil (2009/05)
- Greenish-blue kyanite – 3.91 ct cab – Orissa, India (2009/05)
- Greenish-blue kyanite – 3.70 ct – Orissa, India (2013/10)
- Yellowish-green kyanite – 2.96 ct – Madagascar (2014/01)
- Yellowish-green kyanite – 10.15 ct – Mirerani, Tanzania (2016/12)
- Green kyanite – 9.58 ct – Odisha, India (2017/03)
- Grayish-green kyanite – 16.49 ct Crystal – Mautia Hill, Location #2, Kongwa, Dodoma, Tanzania (2018/08)
Cr3+, Fe3+
Fe2+-Ti4+ and Fe2+-Fe3+ IVCT
Fe2+-Ti4+, Fe3+ and Cr3+
Fe2+-Ti4+ and Fe2+-Fe3+ IVCT
Cr3+, Fe3+
Cr3+, Fe3+
Fe3+
Fe3+, Cr3+
Fe3+, Cr3+
Grayish-green kyanite – 16.49 ct Crystal – Mautia Hill, Location #2, Kongwa, Dodoma, Tanzania (2018/08)
Fe3+, Cr3+
Fe3+ and Mn3+
Fe3+ and Mn3+
No spectrum